#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <numeric>
#include <map>
#include <set>
#include <complex>

using namespace std;

#define REP(i,n)	for(int i=0;i<(n);++i)
#define REPS(i,s,t)	for(int i=(s);i<(t);++i)

#define INF 		2000000007
#define MOD			1000000000

#define MAX 		100005

typedef unsigned int 			uint;
typedef unsigned long long int	ull;
typedef long long int 			ll;

//int dp[MAX];

int nCr(int n,int r){
	ull ans=1;
	r = min(r,n-r);
	vector<int> t(r);
	REP(i,r)t[i] = n-i;
	REPS(i,2,r+1){
		REP(j,r){
			if(t[j]%i==0){
				t[j] /= i;
				break;
			}
		}
	}
	REP(i,r) ans = (ans * t[i])%(MOD);
	return (int)ans;
}

int main(){
	ull N;cin>>N;
	int M;cin>>M;

	N /= 1000;

	int R = N%M;
	
	// M C R 
	cout <<nCr(M,R) << endl;

	return 0;
}